Centrifugal grain-drier



No. 752,882. PATBNTBD FEB. s, 1904 M. L. BARBBAU, CENTRHUGAL GRAINDRIBR.

APPLICATIONFILED JULY 17, 1901.

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Iatented February 23, 1904.

UNITED STATES PATENT OFFICE.

MALCOLM L. IBARBEAU, OF SILVERCREEK, YORK, ASSIGNORTO THE S. HOVVESCOMPANY, OF SILVERCREEK, NEW YORK.

CENTRIFUGAL GRAIN-DRIER.

SPECIFICATION forming part' of Letters Patent No. 752,882, datedFebruary 23,1904.

Application led July 17, 1901.

To all whom it may concern,.-

Be it known that I, MALCOLM L. BARBEAU, a subject of the King of GreatBritain, residing at Silvercreelr, in the county of Chautauqua, in theState of New York, have invented new and useful Improvements inCentrifugal Grain-Driers, of which the following is a specification.

My invention relates to that class of centrifugal drying-machines whichare employed for drying,.as far as practicable, wetl grain and othergranular materials and which embody a rapidly-rotating perforated shellor cylinder in which the material is subjected to centrifugal force fordriving the water or other liquid through the perforations and aconveying mechanism for moving the material from the feed end of thecylinder or shell to the discharge end thereof, so that the operation iscarried on continuously.

The object of the invention is to produce a machine of this generalcharacter which is provided with an exceedingly simple, durable, andeflicient device for conveying the material through the cylinder orshell.

In the accompanying drawings, consisting of two sheets, Figure l is alongitudinal sectional elevation through a centrifugal dryingmachineembodying my invention. Fig. 2 is a horizontal sectional view, partly inplan, of said machine. Fig. 3 is a transverse vertical sectional view onthe line 3 3, Fig. l. Fig. 4 is a vertical sectional view through therotating shell, illustrating a slightly-different conveyer. Fig. 5 is atop plan view of this conveyer.

Like letters of reference refer to like parts in the several figures.

Referring to Figs. 1 to 3, A indicates the rotary perforated shell orcylinder; B, the feedreceptacle at one end of the same; O, thefeedspout, and D the feeding-wing or other-device for delivering thematerial to be treated from the feed-receptacle into the shell orcylinder. The latter is shown in the drawings to be arrangedhorizontally and is journaled to rotate on a horizontal axis in anysuitable manner. In the construction illustrated the cylinder is SerialNo. 68,604. (No model.)

suitable means, such as collars e, between which the hubs f and g' areconfined. The shaft E is shown'to project at the ends beyond .the spiderF and head G and is secured at its ends in suitable bearings t, carriedby a frame H, which may be of any desired construction.

Any suitable means may be provided for rotating the shell or cylinder,such as a pulley I, secured to the outer end of the hollow shaft g. Jindicates a series of. short inclined blades or Wings supported withinthe shell or cylinder, as by means of a longitudinal head or bar Jconnecting the blades, and secured by radial arms J2 to the stationaryshaft E. rlhe blades or Wings J are arranged one behind the other fromthe head to the tail end of the cylinder and constitute a conveyerextending practically from one end to the other of the cylinder orshell. The blades are so inclined as to propel the material with thedesired speed and overlap more or less, so that no may terial carriedaround by the cylinder can pass between the blades without coming incontact with one of the blades. The latter. extend into close proximityof the peripheral wall of the cylinder and preferably have their outeredges curved, as indicated at j, to correspond with the curvature of theinner surface of the cylinder.

The material carried into the shell or cylinder is caused by centrifugalforce to cling to the inner surface of the perforated wall. In therotation of the shell the material is brought into contact with theblades or wings J, which scrape the material from the cylinder and owingto their inclination push or move it onward toward the discharge endthereof, in which pushing or moving the material is rolled or agitatedmore or less, thus subjecting all portions of it thoroughly to thecentrifugalv l action during its travel through the machine. The bladesbeing comparatively short and sta tionary act only intermittently on anyparticular portion of the material as it is brought against the bladesonce in each rotation of the shell or cylinder, the material retainingthe position on the shell until brought into contact with a blade, whichmoves it forward into a position to be similarly acted upon by the nextblade in the next rotation of the shell, and so on until the materialhas been pushed forward by each successive blade and finally dischargedfrom the shell. The rapidity of movement of the material is determinedby the length and inclination of the blades, and these may be changed tosuit the conditions of a particular class of work or material.

K indicates an inclosing casing for the cylinder of any desired or usualform. It is shown as provided with a vertical partition dividing thecasing into two compartments L and L the former of which catches theexpelled liquid and directs the same to a suitable discharge l and thelatter of which receives the material from the discharge end of theshell or cylinder and directs it to a suitable discharge Z.

m indicates a hand-hole for the purpose of cleaning the bottom of thecasing should the same become choked.

A. single spiral or inclined blade N may be employed, as shown in Figs.4 and 5, instead of a plurality of blades; but a single blade isdesirable only in special cases in which a more rapid movement of thematerial through the cylinder and less agitation of the materialsuffices for effecting the desired drying operation. rlhe blade N issupported from the stationary shaft E by arms n or other suitable means.

I claim as my invention# l. The combination of a stationary shaftsupported at opposite ends, a perforated rotary shell provided atopposite ends with bearings by which said shell is journaled andsupported on said shaft between the supports thereof, and a stationaryconveyer secured to said shaft within said shell and acting to move thematerial lengthwise through the shell, substantially as set forth.

Q. The combination of a rotary perforated shell, a stationary shaftextending through the same, and on which said shell is supported androtates, radial arms secured to said shaft, a longitudinal bar or headconnected at opposite ends to said arms, and inclined conveyerbladescarried by said longitudinal bar, substantially as set forth.

3. The. combination of a stationary shaft supported at its Yoppositeends, a perforated shell surrounding said shaft and provided at one endwith a bearing j ournaled on said shaft, a head secured to the oppositeend of said shell and provided with an outwardly-extending hub journaledon said shaft, a drive-wheel secured to said hub, a stationaryfeed-receptacle surrounding said hub, a feed device secured to said huband Working in said feed-receptacle, and a stationary conveyer securedto said shaft in said shell adjacent to the inner surface thereof andacting to move the material lfongiltudinally of the shell, substantiallyas set ort Witness my hand this 12th day of July,

MALCOLM L. BARBEAU.

Witnesses:

WILL K. MILLER, A. D. RoDGERs.

